EWI to top of monopitch verge

Author details

Detail summary

EWI detail for insulation running up to the top of an existing monopitch verge and forming a new parapet with stainless steel cap flashing. New lead flashing to junction of roof with insulation and stainless steel cap flashing over insulation and render.

Technical description

Section detail. EWI to monopitch verge to form parapet. New flashing and capping over EWI.

Reference Specification

New flashing and membrane to BS EN 10088-2 and BS EN ISO 9445-1 or -2. with sealant to flashing to BS EN ISO 11600.

Fixing: turned over head of tiles. Clipped at first 500mm (max) centres along free edge. Upstand plugged and screwed to abutment in top third of each length only.

Notes

Care should be taken to ensure air-tightness. Seal all service penetrations. Lap and tape all membranes.

All insulation to be continuous to avoid thermal bridging.

Preparation of external wall: Remove any existing loose material and prepare in accordance with manufacturer's requirements.

Any alterations to drainage and other fixtures, or work to prepare the existing roof, to be agreed with contract administrator prior to work being undertaken. Prior to start on site inspect: form and condition of the roof structure; institute repairs and/ or additional works necessary to make the existing construction suitable to receive EWI system.

Existing services

Rainwater Pipes and Waste Water Drainage: Rainwater pipes and waste water pipes will be moved to the outer face of insulation as standard, and swan-necked back into gulleys where possible. Any work additional to this should be agreed in writing with the contract administrator.

Windows and doors: Where windows and doors are to be replaced in insulation please refer to contract/window schedules for details. Where windows and doors are to be retained in insulation please refer to relevant detail drawings to show reveal insulation and cills.

Parts list

EWI (Woodfibre) System, Rendered Finish [EW01]

Composite woodfibre board for use on solid and hard to treat cavity walls.

Insulation back board: 100mm UdiTherm SK.

Insulation top board: 100mm Diffutherm NF (T&G, renderable).

Thermal conductivity: 0.045W/m2K. GWP 0.

Base Coat: levelling on substrate: 90% contact required around edge of boards between board and substrate to prevent thermal bypass. If substrate is very uneven, use base-coat material around edge of board to achieve contact.

Fixing: Fixed mechanically to substrate in accordance with manufacturers recommendations.

Discussion

For those who have seen the Earth from space, and for the hundreds and perhaps thousands more who will, the experience most certainly changes your perspective. The things that we share in our world are far more valuable than those which divide us.

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For those who have seen the Earth from space, and for the hundreds and perhaps thousands more who will, the experience most certainly changes your perspective. The things that we share in our world are far more valuable than those which divide us.

For those who have seen the Earth from space, and for the hundreds and perhaps thousands more who will, the experience most certainly changes your perspective. The things that we share in our world are far more valuable than those which divide us.

Ease of understanding detail: Easy

Ease of sourcing materials: Easy

Ease of sourcing skills: Easy

Ease of implementation: Easy

Overall cost: Low cost

User name

For those who have seen the Earth from space, and for the hundreds and perhaps thousands more who will, the experience most certainly changes your perspective. The things that we share in our world are far more valuable than those which divide us.

For those who have seen the Earth from space, and for the hundreds and perhaps thousands more who will, the experience most certainly changes your perspective. The things that we share in our world are far more valuable than those which divide us.

Ease of understanding detail: Easy

Ease of sourcing materials: Easy

Ease of sourcing skills: Easy

Ease of implementation: Easy

Overall cost: Low cost

User name

For those who have seen the Earth from space, and for the hundreds and perhaps thousands more who will, the experience most certainly changes your perspective. The things that we share in our world are far more valuable than those which divide us.

For those who have seen the Earth from space, and for the hundreds and perhaps thousands more who will, the experience most certainly changes your perspective. The things that we share in our world are far more valuable than those which divide us.